How much does a 0.75 to 0.99ct L SI1 natural princess diamond cost?

As of November 6, 2026, 0.75 to 0.99ct L SI1 natural princess diamonds typically cost $916 AUD to $2,191 AUD, with a median price of $1,101 AUD. There are currently 47 diamonds matching this specification available across retailers.

Where can I find the best price on a L SI1 princess diamond?

About 36% of these diamonds are available at multiple retailers, with an average price spread of 48%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct L SI1 Natural Princess

Quick answer

As of November 6, 2026, there are 47 natural princess diamonds with L colour and SI1 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run $916 AUD to $2,191 AUD, with a median of $1,101 AUD. Half of all listings fall between $1,093 AUD and $1,697 AUD per carat. Over the last 30 days the median price moved -5.1% and the number of listings moved +30.9%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Princess natural stones in the index: 1,991 USD per carat, -8.2% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

Lowest Price

$853 AUD

Highest Price

$4,290 AUD

Average Price

$1,360 AUD

Market Intelligence

Cross Retailer %

36.2%

Price Spread

48.3%

30-Day Price Trend

-5.1%

30-Day Supply Change

+30.9%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$875/ct

10th Percentile

$712

Median

$875

90th Percentile

$1,802

Score Distribution

47 diamonds scored across 3 quality tiers

Very Good

16 (34.0%)

Good

24 (51.1%)

Average

7 (14.9%)

Find Your Diamond

Search 47 L SI1 princess diamonds and compare prices.

Search Diamonds

Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1